it has a clinically relevant ingredient list and two (self-funded) scientific studies, one of which was generally positive
As the direct precursor to nitric oxide, it has the strongest theoretical rationale for use in ED
Because we can only get it in food, and theres toxicity associated with its depletion, Johns Hopkins University researchers concluded that ergothioneine may represent a new vitamin. If it were classified as such, that would make it the first new vitamin since the last new vitamin, B12, was isolated back in 1948
Reaney M, Yu M, Lakshmanan M, Pechtner V, van Brunt K
Thorne Advanced Testosterone Support: Relevant doses of shilajit and ashwagandha, with a little zinc and luteolin, which lacks sufficient support for testosterone boosting